MOSIS is a low-cost prototyping and small-volume production service for VLSI circuit development. Since 1981, MOSIS has fabricated more than 50,000 circuit designs for commercial firms, government agencies, and research and educational institutions around the world. A Single Interface to the Semiconductor Industry MOSIS provides designers with a single interface to the constantly changing technologies of the semiconductor industry. Mask generation, wafer fabrication, and device packaging are contracted to leading industry vendors.